In keeping with its international reputation for high quality products, Bico Australia assures that its jewelry is made with materials of the highest standards. All Bico Australia jewelry is guaranteed to be free of nickel and lead. Most Bico Australia pendants are made of hand polished silver over a core of fine grade pewter. All Bico pendants have a unique invisible coating which retains their finish. Bico Australia pendants that have item numbers beginning with BT and BTS are made with resin and pewter which has been hand polished to a high gloss. Bico Australia chains are made from hand polished and brushed silver over a brass core. All crystals used in the design of Bico Australia pendants are authentic Swarovski Crystals. All wood used in the design of Bico Australia pendants is New Guinea Rosewood. Rosewood is known for its durability and its beauty. Bico Australia jewelry is stamped with the original Bico logo. It is a mark that guarantees quality and fine craftsmanship.